Cerebral ischaemia

Stroke is the major cause of disability in the community. Most strokes are due to blocked arteries in the brain. Evidence is accumulating that clot-busting drugs improve outcome after ischaemic stroke. Recombinant tissue plasminogen activator (rt-PA) is licensed for the treatment of selected patients within three hours of acute ischaemic stroke in many parts of the world, and stroke services are being developed so that eligible patients can receive this treatment as soon as possible after the onset of stroke symptoms.